High-precision graphite laser cutting machine and method for machining high-precision graphite pipe by using high-precision graphite laser cutting machine

Abstract

The invention provides a high-precision graphite laser cutting machine and a method for machining a high-precision graphite pipe by using the high-precision graphite laser cutting machine. The high-precision graphite laser cutting machine comprises an L-shaped frame body, a marble tabletop, a left clamping piece, a right clamping piece, a laser head, a compressed air spray head, an X-axis linear motor guide rail system, a Z-axis linear motor guide rail system, a Y-axis linear motor guide rail system, a horizontal sliding block, a vertical sliding block and a controller. The high-precision graphite laser cutting machine and the method are specially used for machining a brittle pipe such as the graphite pipe, and is used for machining a high-compactness pipe at the same time; according to the graphite laser cutting machine, the graphite laser cutting machine has the function of changing clamping support into flexible support according to the machining position in a self-adaptive mode according to the machining position of the laser head, meanwhile, the laser head can dynamically follow the displacement of the to-be-machined graphite pipe through the simple mechanical structure, the precision of laser cutting is further improved, and the cutting machine is high in automation degree and relatively high in precision.

Description

technical field [0001] The invention relates to the field of laser cutting equipment, in particular to a high-precision graphite laser cutting machine and a method for processing high-precision graphite pipes. Background technique [0002] When using a laser to cut or process metal pipes, especially graphite pipes, the heat generated by the laser is relatively high, and the thermal effect is very obvious, resulting in a decline in the quality of laser cutting. In the prior art, such as Patent Document 1 (CN1541801A), it solves the problem of laser cutting. The problem of overheating of cutting pipes is that during the cutting process, the compressed air is sprayed onto the laser processing surface through the compressed air nozzle to achieve the purpose of cooling down. However, it needs to spray compressed air during the processing of the pipes. Therefore, It has a great impact on the pipe, and the pipe will always be bent and deformed by the injection force during the proc...

AI Technical Summary

Problems solved by technology

[0002] When using a laser to cut or process metal pipes, especially graphite pipes, the heat generated by the laser is relatively high, and the thermal effect is very obvious, resulting in a decline in the quality of laser cutting. In the prior art, such as Patent Document 1 (CN1541801A), it solves the problem of laser cutting. The problem of overheating of cutting pipes is that during the cutting process, the compressed air is sprayed onto the laser processing surface through the compressed air nozzle to achieve the purpose of cooling down. However, it needs to spray compressed air during the processing of the pipes. Therefore, It has a great impact on the pipe, and the pipe will always be bent and deformed by the injection force during the processing, and the resulting deformation force cannot be removed well, and accumulates in the workpiece, affecting the processing accuracy of the pipe; another example is patent document 2( CN207710110U), which discloses a clamp for an optical fiber cutting device, the clamp can limit the end of the pipe and the inner wall, thereby clamping the pipe for cutting work, but it does not take into account that some pipes such as graphite pipes are relatively fragile, The use of this kind of clamp may cause the pipe to be processed to be broken when it is clamped because the clamping force is too large; another example is patent document 3 (CN103817443A), which discloses a laser cutting device for cutting pipes. Among them, the guide mechanism 2 and the auxiliary clamping mechanism 4 are used to clamp the pipe, but when the guide mechanism 2 and the auxiliary clamping mechanism 4 clamp the pipe, they are fixed and cannot be rotated, so the pipe It can only be loaded in one direction, but not suitable for i

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